Blower Motor Relay: Testing and Inspection

INSPECTION

FULL AUTO TYPE
1. Disconnect the negative (-) battery terminal.
2. Remove the passenger compartment relay box.
Check for continuity between the terminals.
3. There should be continuity between the No.9 in the I/P-K and No.15 in the I/P-A terminals when power and ground are connected to the No.16 in the I/P-D and No.13 I/P-B terminals in the passenger compartment relay box.







4. There should be no continuity between the No.9 in the I/P-K and No.15 in the I/P-A terminals when power is disconnected.
5. If the blower motor voltage does not operate properly, substitute with a known-good blower relay and check for proper operation.
6. If the problem is corrected, replace the blower relay.

MANUAL TYPE
1. There should be continuity between the No.3 and No.4 terminals when power and ground are connected to the No.1 and No.2 terminals.




2. There should be no continuity between the No.3 and No.4 terminals when power is disconnected.